On 2011-02-24 12:46 PM, Wojciech Dubowik wrote:
>> On 2011-02-23 4:48 PM, Wojciech Dubowik wrote:
>> > Signed-off-by: Wojciech Dubowik <wojciech.dubo...@neratec.com>
>> Please make this dynamic. On the Fonera 2.0, PCI is used for USB 2.0
>> support and AHB is used for wireless.
>>
>> - Felix
> Hello Felix,
>
> Will this do the trick for dma mapping?
>
> --- a/arch/mips/include/asm/mach-ar231x/dma-coherence.h
> +++ b/arch/mips/include/asm/mach-ar231x/dma-coherence.h
> @@ -12,16 +12,23 @@
>
> #define PCI_DMA_OFFSET 0x20000000
>
> +extern struct bus_type pci_bus_type;
> struct device;
>
> static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t
> size)
> {
> - return virt_to_phys(addr) + (dev != NULL ? PCI_DMA_OFFSET : 0);
> + if (dev == NULL)
> + return virt_to_phys(addr);
> + else
> + return virt_to_phys(addr) + (dev->bus == &pci_bus_type ?
> PCI_DMA_OFFSET : 0);
> }
>
> static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page
> *page)
> {
> - return page_to_phys(page) + (dev != NULL ? PCI_DMA_OFFSET : 0);
> + if (dev == NULL)
> + return page_to_phys(page);
> + else
> + return page_to_phys(page) + (dev->bus == &pci_bus_type ?
> PCI_DMA_OFFSET : 0);
> }
>
> static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
>
> I have tested it on my AR2315 with pci bus enabled. I don't have anything
> attached to it
> so I cannot say that pci dma really works.
I think this will work.
- Felix
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